20.500.12556/DiRROS-18843 Revealing subtle active tectonic deformation: integrating lidar, photogrammetry, field mapping, and geophysical surveys to assess the Late Quaternary activity of the Sava Fault (Southern Alps, Slovenia) We applied an interdisciplinary approach to analyze the late Quaternary activity of the Sava Fault in the Slovenian Southern Alps. The Sava Fault is an active strike-slip fault, and part of the Periadriatic Fault System that accommodated the convergence of Adria and Europe. It is one of the longest faults in the Southern Alps. Using high-resolution digital elevation models from lidar and photogrammetric surveys, we were able to overcome the challenges of assessing fault activity in a region with intense surface processes, dense vegetation, and relatively low fault slip rates. By integrating remote sensing analysis, geomorphological mapping, structural geological investigations, and near-surface geophysics (electrical resistivity tomography and ground penetrating radar), we were able to find subtle geomorphological indicators, detect near-surface deformation, and show distributed surface deformation and a complex fault pattern. Using optically stimulated luminescence dating, we tentatively estimated a slip rate of 1.8 ± 0.4 mm/a for the last 27 ka, which exceeds previous estimates and suggests temporal variability in fault behavior. Our study highlights the importance of modern high-resolution remote sensing techniques and interdisciplinary approaches in detecting tectonic deformation in relatively low-strain rate environments with intense surface processes. We show that slip rates can vary significantly depending on the studied time window. This is a critical piece of information since slip rates are a key input parameter for seismic hazard studies. active fault lidar photogrammetry tectonic geomorphology structural geology geophysics electrical resistivity tomography ground penetrating radar slip rate Sava Fault true false true MDPI Angleški jezik Ni določen Neznano 2024-04-30 03:41:28 2024-04-30 08:32:49 2024-05-01 03:58:14 0000-00-00 00:00:00 2024 0 0 33 str. no. 9 vol. 16 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-04-23 551.1/.4 2072-4292 10.3390/rs16091490 193873923 remotesensing-16-01490-v2.pdf remotesensing-16-01490-v2.pdf 1 322DB83E86FF21A38F913B1DCA7B2361 2534ed4f164dc2b6c0a69d9aa186476c805d5d4c437c3c6479babc5b01b056cb e7f9bb8e-06bb-11ef-a26d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25797 Geološki zavod Slovenije 0 0 0